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Small and medium sized steel, wire rod, steel, pipe, steel wire and wire rope, can be stored in a well ventilated material shed, but must cover pad. Some small, thin steel plate, steel, silicon steel sheet, small caliber or thin-walled steel tube, cold rolling, cold drawn steel and high price, easy corrosion metal products, can be stored in storage. Keep the site or warehouse of spiral steel pipe products, should be selected in the clean, unobstructed drainage areas, ...

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In the use of helical submerged arc welded steel pipe and the production process, the human invention of a lot of excellent welding and production methods, greatly promoted the steady and rapid development of the industry, but also makes the industry in the development of optimization. Which submerged arc welding is a new welding method invented in 1940, it is the same as the previous manual welding is it or the use of slag protection, but the residue is not the electrode...

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In the rapid development of steel at the same time, the market some of the fake steel pipe products have also appeared, then how to correctly and accurately identify the quality of steel is good or bad? 1, the appearance of counterfeit steel pipe often pimple phenomenon. Ma face is due to the serious wear and tear caused by irregular steel surface uneven rugged defects. As the fake steel pipe manufacturers to pursue profits, often rolling rolling the most standard. ...

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Spiral welded steel pipe forming process, the steel plate deformation uniform, residual stress is small, the surface does not produce scratches. Machined spiral steel pipe in the diameter and wall thickness of the size range of greater flexibility, especially in the production of high-grade thick-walled pipe, especially in small and medium-sized thick-walled pipe with other processes can not match the advantages to meet the user In the spiral steel pipe specifications more re...

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Stainless steel welded pipe 1, better corrosion resistance, the material has good corrosion resistance. In the stainless steel pipe surface has a thin protective film, protective film, protective film of about 3-6 mm, the film is more tough, even if the protective film damage, as long as the oxidation, can effectively prevent its further oxidation , Produce rust. In the understanding of the characteristics of stainless steel pipe and to achieve the correct use, can effective...

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304 304-based derived from the 304 stainless steel family, the appearance of processing functions are very good. Currently on the market commonly used in the appearance of processing can be used in 304 stainless steel. First, dry grinding drawing The most common on the market are filament and short wire, 304 series stainless steel through the processing of such appearance, showing outstanding decorative effect, to meet the needs of the usual decoration materials. In general...

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          Big diameter steel pipes, either spirally / helically seam welded or longitudinally / straight seam welded, are cold-formed and welded by submerged-arc welder or electric resistance welder. Longitudianlly seam welded pipe (SAWL) is widely used as the main pipeline for oil and gas and other fluid as well. Ez Steel LSAW plant can produce OD: 457 mm -  1422mm   Length: 6000mm - 12,500mm  Wall Thick: 10mm -  50mm. Material grade from S235 up ...

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Hot-dip galvanized steel pipe is a hot-dip galvanized steel pipe made by bending a strip or a coil plate in a helical shape and welding the inner seam and the outer seam with double-sided submerged arc welding, which can be widely applied to water for the following reasons , Electricity, chemical and other industries: 1) As long as the change of forming angle, you can use the same width of the strip production of various caliber steel pipe, easy to adjust. 2) Because it is a ...

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The production process is different, the spiral pipe is made of steel strip crimp welding, seamless tube is made of billet into a square tube without welding points. Use is different from the spiral tube pressure is not as good as the seamless square tube pressure is high, the price is different, seamless square tube production capacity is low, the spiral tube production capacity is high, two kinds of the same type of square tube seamless square tube expensive , If not th...

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Spiral pipe is a strip coil as raw material, often warm extrusion molding, spiral with automatic double wire submerged arc welding process double-sided welded pipe joints. 1. Raw material, steel strip, welding wire, flux. Have to go through strict physical and chemical tests before they are put into the investment. 2. Strip head and tail docking, using single or double wire submerged arc welding, the steel tube rolled by automatic submerged arc welding welding. 3. B...

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Shell and tube heat exchanger and tubular heat exchanger. Is to close the bundle in the shell wall as heat transfer surface heat exchanger. The heat exchanger has the advantages of simple structure and reliable operation, and can be used for manufacturing various structural materials (mainly metal materials), and can be used under high temperature and high pressure, and is the most widely used type. structure The shell and tube heat exchanger is composed of a shell, a...

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The shell and tube heat exchanger is different from the temperature of the fluid inside and outside the tube, and the temperature of the shell of the heat exchanger is different from that of the tube bundle. Two if there is a great difference of temperature change, will produce a great deal of thermal stress in a heat pipe, resulting in bending, fracture, or from the tube plate. Therefore, appropriate compensation measures should be taken to eliminate or reduce thermal st...

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